March 2008
Beginner to intermediate
191 pages
3h 52m
English
Content preview from Java Pocket Guide
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Chapter 9. Java Platform, SE
The Java Platform, Standard Edition includes the Java Runtime Environment (JRE) and its encompassing Java Development Kit (JDK) (see Chapter 10), the Java Programming Language, Java Virtual Machines (JVMs), tools/utilities, and the Java SE API libraries; see Figure 9-1.
Figure 9-1. Java Platform, SE
Common Java SE API Libraries
Java SE API 6 standard libraries are provided within packages of which there are more than 200 available. Each package is made up of classes and/or interfaces. An abbreviated list of commonly used packages is represented here.
Language and Utility Libraries
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java.lang Language support; system/math methods, fundamental types, strings, threads, and exceptions
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java.lang.annotation Annotation framework; metadata library support
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java.lang.instrument Program instrumentation; agent services to instrument JVM programs
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java.lang.management Java Management Extensions API; JVM monitoring and management
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java.lang.ref Reference-object classes; interaction support with the GC
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java.lang.reflect Reflective information about classes and objects
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java.util Utilities; collections, event model, date/time, and international support
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java.util.concurrent Concurrency utilities; executors, queues, timing, and synchronizers
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java.util.concurrent.atomic Atomic toolkit; lock-free thread-safe programming on single variables
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java.util.concurrent.locks Locking framework; ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.